Mizore Shirayuki is a main character in the anime series 'Rosario to Vampire'. She is a yuki-onna, a snow woman, who initially appears as a mysterious and aloof figure with a tendency to stalk the protagonist, Tsukune Aono. Despite her seemingly cold demeanor, Mizore is actually quite shy and yearns for warmth and companionship. Throughout the series, she becomes a loyal friend and ally to Tsukune and the group. Her ability to control ice and snow makes her a formidable opponent, and her character arc explores themes of loneliness and acceptance.